Prepare renaming "V8 Linux64 TSAN - concurrent marking" bot

... to "V8 Linux64 TSAN - stress-incremental-marking" since it runs
with --stress-incremental-marking (and concurrent marking is on by
default anyways).

No-Try: true
Change-Id: I4660151cde2fb9e873cc046c1baf6578ab835eb7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2416385
Commit-Queue: Georg Neis <neis@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69983}

infra/testing/builders.pyl

@@ -1184,6 +1184,37 @@
       },
     ],
   },
+  'V8 Linux64 TSAN - stress-incremental-marking': {
+    'swarming_dimensions' : {
+      'os': 'Ubuntu-16.04',
+    },
+    'swarming_task_attrs': {
+      'expiration': 14400,
+      'hard_timeout': 3600,
+      'priority': 35,
+    },
+    'tests': [
+      {
+        'name': 'benchmarks',
+        'test_args': ['--extra-flags=--stress-incremental-marking'],
+      },
+      {
+        'name': 'mozilla',
+        'test_args': ['--extra-flags=--stress-incremental-marking'],
+      },
+      {
+        'name': 'test262',
+        'variant': 'default',
+        'test_args': ['--extra-flags=--stress-incremental-marking'],
+        'shards': 4,
+      },
+      {
+        'name': 'v8testing',
+        'test_args': ['--extra-flags=--stress-incremental-marking'],
+        'shards': 6,
+      },
+    ],
+  },
   'V8 Linux64 TSAN - isolates': {
     'swarming_dimensions' : {
       'os': 'Ubuntu-16.04',